News Article | March 28, 2016
In Visayas, one of the three main island groups in The Philippines, too much solar on the grid may lead to blackouts during the election period, which begins today, March 28, and lasts until May 7. Grid operators are concerned that too much power is being fed into the grid when all of the solar PV plants in the region are churning out electric power along with the geothermal and coal plants in the region — even if the geothermal and coal plants are dialed down to their minimum load requirements. Further the swings in power supply due to intermittent PV generation (from 20 to 50 percent) have already caused grid interruptions. Visayas does not have any frequency regulation providers to help balance the grid and absorb excess capacity and the National Grid Corporation of the Philippines and the government are exploring the use of energy storage and potentially hydro assets to help solve the problem. Meanwhile in the U.S. the Energy Storage Association on March 28 is launching its new #StorageIsHere campaign in an attempt to bring more visibility to the technology that it says is already "booming." The articles below offer more detail on both stories. Image By Howard the Duck at English Wikipedia, CC BY 2.5.
Vinluan R.J.,F. F. Cruz and Co. |
Santos V.,F. F. Cruz and Co. |
Valdeabella M.,National Grid Corporation of the Philippines |
Limsuan M.,National Grid Corporation of the Philippines |
Caluya N.,F. F. Cruz and Co.
31st Asian Conference on Remote Sensing 2010, ACRS 2010 | Year: 2010
The electrical power system may be considered the lifeblood of the economy of any country, developed or developing. For this reason, the electrical power system should be operated and managed efficiently in order to deliver stable and affordable electric power to the end-users. The use of an enterprise-wide and spatial-based information system is considered one of the industry best practices for power system management, particularly of the transmission component. This paper reports on the use of orthophoto maps in the management of the power transmission system in the south Luzon area in the Philippines. Color aerial photography and orthophoto mapping were undertaken to cover the transmission assets of the National Grid Corporation of the Philippines (NGCP) in the South Luzon region (almost 400 linear-km). Although conventional color aerial photography was utilized, the film negatives were scanned at 20 cm spatial resolution using the Vexcel Ultrascan 5000 photogrammetric scanner to enable the use of the digital photogrammetric mapping approach. The main purpose of the activity was to map the facilities for power transmission such as power cables, transmission towers, and substations and to use these map data to populate the spatial databases of the web-based Enterprise Geographic Information System (E-GIS). However, the same orthophoto maps, in conjunction with field data and satellite images, were also utilized for other applications critical to power transmission system management such as the delineation of right-of-way areas, vegetation management, disaster risk reduction, field monitoring, and engineering planning. For example, the orthophoto maps clearly identified the portions of a transmission line that were at risk of faulting due to vegetation interference, the parcels within the right-of-way that were privately-owned, and the facilities that needed rehabilitation and/or restoration.
Ruan Q.,National Grid Corporation of the Philippines |
Ma R.,National Grid Corporation of the Philippines |
Xiao F.,National Grid Corporation of the Philippines |
Seludo R.,National Grid Corporation of the Philippines |
And 2 more authors.
Dianli Xitong Zidonghua/Automation of Electric Power Systems | Year: 2011
Blackout is a condition that a certain transmission grid, large portion of interconnected transmission grids or networks experiences a total loss of power. This condition is evidently unavoidable as stronger and more robust systems than Luzon Grid like Indian, Brazilian, North American and European networks have already experienced blackouts in the past few years. Restoration following up blackout is urgent and technically complicated up to the lost. This paper mainly focuses on the blackstart of generators and subsequent restoration of the entire grid. Following the occurrence of Luzon Grid wide blackout on July 14, 2010, this manuscript provides an overview and describes the key actions undertaken by the Luzon system operator (LSO) in restoring the Luzon Grid, and also gives suggestions for improvement based on those experiences. Difficulties encountered in the actual system restoration and certain measures needed to improve the restoration process are also discussed in this paper. © 2011 State Grid Electric Power Research Institute Press.
Lee M.S.,Hyosung Corporation |
Jung J.W.,Hyosung Corporation |
Yeo S.Y.,Hyosung Corporation |
Lee C.S.,Hyosung Corporation |
And 2 more authors.
44th International Conference on Large High Voltage Electric Systems 2012 | Year: 2012
Recently, for the purpose of power grid expansion, old equipment upgrade/updating and substation refurbishment/extension project are increasing in the world. Even though, the portion of GIS substation is increasing up to now, still conventional type AIS substation are main type substation in the world due to issue of GIS maintenance time, spare component compatibility and project cost. Therefore, many AIS substations are being maintained through refurbishment, upgrade and extension of existing substation using AIS equipment. However for sites where land is scarce GIS is becoming more and more popular for complete renewals of substations. Using GIS can make the renewable work much easier thanks to the very small footprint of GIS. In addition the outage can be kept to a minimum if the new GIS can be built, while keeping the old station in service. The only necessary outage would then be when changing over the objects to the new GIS. End of 2010, asset owner National Grid Corporation of Philippines (NGCP) issued the substation refurbishment/extension project and Hyosung are now working with the construction. This paper describes some issues considered during design of this project, such as transformer power capacity growth, main equipment dismantling and new secondary system integration into existing system. It can be expected that these kinds of projects will increase more and more in the world to achieve the grid expansion as well as system maintenance. So careful consideration shall be given to minimize the design error, and this contribution will be helpful to approach future similar projects. Furthermore, more issues and experience during engineering design and execution will be shared for future project.